Cleaning method of tube cooler When the copper tube of […]
Cleaning method of tube cooler
When the copper tube of the tube cooler is damaged and leaks, if the tube plug is used to block it, the total number of blockages shall not exceed 10% of the total number of tubes (or according to the requirements of the cooler product manual). According to the water quality and oil quality, carry out the inspection and cleaning of the fouling on the tube wall surface of the tube cooler.
Tube cooler cleaning method is as follows:
1. Cleaning the water side of the tube cooler
A. Trichloroethylene solution can be used for flushing, so that the cleaning liquid circulates in the cooler. The pressure of the solution is not greater than 0.63MPa, and the flow direction of the solution is preferably opposite to the direction of the oil flow in the cooler. The cleaning time depends on the dirt. After rinsing, introduce clean water into the cleaning until the water flowing out is clean by visual inspection.
B. You can also use carbon tetrachloride soak, pour the solution into the cooler, and watch the color of the solution after 15-20 minutes. If it is severely turbid, replace it with a new solution and repeat the soaking until the color of the solution after soaking is similar to that when it is clean. Then introduce clean water into the cleaning, until the outflow of water is clean by visual inspection.
C. If there is no obvious structure in the water side pipeline, you can clean it with the corresponding brush according to the diameter of the pipeline, and then rinse it with clean water.
2. Carry out a water pressure test after cleaning the tube cooler. The cavity between the tubes of the tube cooler shall be tested for tightness with water according to its nominal pressure or 1.25 times the working pressure, and the pressure shall be maintained for 30 minutes, and there shall be no leakage at the expanded tube or welded joint. The water must be completely drained after the test.
3. Check the heat exchange effect of the tube cooler. After the lubricating oil is cooled by the cooler, the temperature can generally be reduced by 5-10℃, and the temperature of the cooling water can be increased by 3-5℃.
4. The connecting oil ports of the tube cooler must not be opened for no reason during the cleaning process, and must be sealed with bulkheads or flange covers.
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